Helicopter Controlled By Cellphone Having Large Functional Area to Enhance the Defence Activity

Authors

Harimohan Rai, Rashes Ranjan

V M K V engineering college

Vinayaka Mission University

Abstract

Since the remote operated devices have a limited range, so there is a need for a device which can be controlled over large distance such as “cellphone”. The helicopter is operated by the help of cellphone that makes a call to the cellphone attached to the helicopter. The cellphone in the helicopter is kept in “Auto Answer” mode. so after ring, the cellphone accepts the call, a tone corresponding to the button pressed to be heard at the other end of the call. This tone is called “Dual Tone Multiple Frequency (DTMF) tone. The helicopter perceives this DTMF toe with the help of phone attached in the helicopter. The received tone processed by microcontroller and further, the DTMF tone is decoded into its equivalent binary digit and this binary number is sent to the microcontroller. This microcontroller is programmed to take a decision for any given input and puts its decision to the helicopter such as to move helicopter in different directions (forward, backward, up, down).the cellphone that make a call to the cellphone stacked to the helicopter acts as a remote.spy camera which is attached in the helicopter is used to provide information which makes operation easier. This project will help to enhance the defence activity.